Carburetor



l CLA. FLEMANG 4 CARBURETOR v Filed Oct. 1L 1917 I 90 justed.

Patented Decree, 1925.

JACKSON, MICHGAN, ASSIGNOR, BY DIREG'JJ AND MESNEv CHARLES A. ELEMnvG,0E

I 1,567,935 PATENT OFFICE.

ASSIGNMENTS, oE ONE-HALE 'ro BaIscoE DEVICES ConroRArIoNf'-, or n arme,

MICHIGAN," A CORPORATION 0E :ammira-MICHIGAN.

OF MICHIGAN, AND ONE-HALF TQTHMAS D. BUICK,

CABBURETOB.

Application inea cutanei-i, 1917. serial no. iefaisa.

Toall whom t may concern:

' le it known that I, CHARLES A. FLEMING,

a citizen of the United States, residing at Jackson, county 'of Jackson,State of Michigan, have invented a certain new and useful Improvement inCarburetors, and de clare the following to be a full, clear, and

exact description of the same, such as will enablevothers skilled in theart to which it 10 pertains tomake and use the same, reference bein whicform a part of this specification.

My invention relates-:to carburetors and objects Aof my improvements areto supply 15 a uniform mixture 4to an internal combus` tion engine atall speeds to .providea device that shall not clo in use and one inwhich thereis. 'a variabe passage for li uid fuel the maiiimuin supplythru whie is ad- I-secure these objects in the invention illustrated inthe accompanying drawing, -in which;

Figure 1 is a sectional elevation of a caryburetor embodying myinvention. Figure 2 is a detail sectional view of the ad'ustable plug.

' igure 3 is a 80 'gure 4.- is a section on the line' D-D Fi e 5 is asectional detail view showing the adjustable plu and socket, the formerbeing' shown in ful lines. .x

Fi 6 is a section of a plug c on the line VI- I, Fig.- 1, looking romthe right of said figure. Fig. 7 is a plan view of the valvee.

' a indicates the carburetor casing as a '40 whole. The air entersthepassage' therethru' at a and leaves the casing `oii the enginesuctionside at as.' a* is theieservoir for vliquid fuel. There is' acylindrical part b depending from the wall ofthe air pas- 45 sage which.is

b. thru which the fifelfis fed from the reservoir a to the air passage.A drain cock is provided for the passage b2,as shown in ghe passa its uper en able p ugr,` which in said' passage.

e b isfbored ,out smoothly at for tting therein an adjustmay slidelongitudinally There is a passage cz had `to 'the accompanying drawings,

sectiouon the line C-'C air passage.

engaging in vplug c so that as said valve is turned about the pivot e*-the plug e is holloy, .to form the Apassage tion draws the the suctionincreases formed thru the plug c which has an ad' justable opening at'c3 communicating at this point with the air passage thru the cai'-buretor or mixing chamber. The plug c is flattened or cut away as shownat f" upon the side toward the engine intake. .This presents a flat wallthat converges downward away from the vertical and is terminated by ashoulder c5. c .is an opening -extending thru the wall of the plu clconum'unicating with the assage ltlieret ru and with the lowerl andeeperl portionof-the cut away part c4.

- The. construction of the plug'c is such 'that when in lits -lowerposition, as indicated in dotted lines in Fig. 1,.the passa Ae b2 iscompletely closed exce t for t e passagethrough said plug an as the plugc is raised, there is a continually enlargin opening at 'the upper endof the passage2A at d between the wall of the passage b2 and the wall ofthe cut away ortion c* of the plug. The aperture-'ce is o the requiredsize to permit of the passage of the maximum quantity of fuel that willbe .requiredat this point by the use to which the particular kind ofcarburetor is to be pu't.

e is a. valve located 'in the air passage thru the carburetor andpivoted at e at its lower edge. e:8 is a web extending across thepassage valve e this web. and valve nearlyclose the operate, air isdrawn vinto the passage and oscillates the, valve e about its pivot ethus withdrawing it proportionally from its einstructing position andallowing `a greater.'

area of passage for the air.4

The valve e is provided lwith lu -aaw' a slot in the upper 'endg'ifthethereby raised to a distance proportional to valve .about its pivot andtherefore'to'the area of opening of the assage.

The operation f t e above ldevice is as follows:

ine is first startedthe'.finir-4A uel thru the openinggc" the valvev elis tui-ned the plug-o is raised about its pivot e2 and thereby thusopening fuel at d which continually e vapas'saefe for liquid argues 'asthe and in the normal position of the4 -When the engine begins to" theturning ofthe creases.'`

plug c rises and as the demand for fuel in- But the passage thus formedis limted'as a maximum, by the selected size of the aperture c" plug c2.

What -laim is v: A carbuetor casing having a carburet-ing Vchambertherein and adapted to communicate with the atmosphere, a oat Achamberconstantly in communication with the carbureting chamber and adapted toconstant supply of volatile fluid for engine idling purposes, s meteringpin establishing Leemans thruthe wall of the.

provide a" communication between the oat chamber and the carburetingchamber and having a groove in the wall thereof establishing unadditional communication between said float chamber and said carburetorchamber for variable speeds of an engine, and means carried by saidmetering pin causing air to travel vtransversely of the directionof theflow of fuel to lift the fuel from said meterpin. f f

n testimony whereof; I sign ythis specication.

CHARLES A.- FLEMING.

